How Much Should Air Duct Cleaning Services Cost in Denver, CO
- Duct&Dryer Pros

- Feb 10, 2024
- 4 min read
Updated: Jul 5

In this post, we'll delve into the average costs of air duct cleaning for homes with a single furnace system in Colorado, based on our extensive experience at Duct&Dryer Pros.
Pricing structures can vary among companies, so we aim to provide approximate costs based on total square footage. Additionally, we'll offer insights on what to check if you receive a quote significantly lower or higher than the average, ensuring you get both fair pricing and quality service.
Duct Cleaning 101
Before looking for a professional to hire, it’s important to understand the actual process of air duct cleaning. Knowing what to expect can help you feel more confident and ensure you're getting the quality service you deserve. Here’s a step-by-step guide to a certified air duct cleaning process:
Inspect the Duct System
Every home and duct system is unique, so the first step is a thorough inspection. The technician will evaluate your system and explain the entire cleaning process to you.
Shut Off the Furnace
Before any cleaning begins, the furnace or air handler unit must be turned off at the master switch. This ensures safety and prevents dust and debris from circulating through the system.
Seal the System
All return/intake and supply air vents must be sealed properly. This is done to prevent cross-contamination of dust and debris while cleaning, keeping the system contained and more effective.
Connect the Duct Vacuum
A powerful negative pressure unit (usually 5,000 CFM or more) is connected to the access openings of your system. This creates negative pressure throughout the ducts, ensuring that debris is effectively sucked out during the cleaning process.
Clean Vents and Main Ducts
Using high-pressure compressed air, air-whip systems, and reverse air nozzles, each return/intake vent, supply air vent, main duct line, and the furnace/air handler unit are thoroughly cleaned. This process loosens dirt and dust, pushing it into the vacuum system for removal.
Finish Up the Process
After cleaning, all access openings are securely sealed to prevent air leakage. The air filter is replaced with a fresh one. Lastly, the technician will show you before and after videos to demonstrate the results of the cleaning.
With this step-by-step guide, you’ll know exactly what happens during a professional duct cleaning and can make an informed decision when hiring a technician.
Average Air Duct Cleaning Cost Breakdown:
Understanding the approximate costs based on the total square footage of your home can help you make informed decisions. Here's a detailed breakdown:
Homes up to 1,500 sq.ft.:
$400-$450, duration: ~ 3 hrs.
Homes 1,500-2,500 sq.ft.:
$450-$550; 3-4 hrs.
Homes 2,500-3,500 sq.ft.:
$550-$650; 4-5 hrs.
Homes 3,500-5,000 sq.ft.:
$650-$800; 5-6 hrs.

Aim for the flat air duct cleaning cost in Denver, CO
What to Check with a Lower Quote:
Receiving a significantly lower quote should trigger caution. Here's what to inquire about:
Final Price Confirmation: Ensure the provided price is final, with no hidden fees or add-ons.
Service Duration: Understand how much time the service will take, typically ranging from 3 to 6 hours based on your home's square footage.
Equipment and Method: When inquiring about the service, be sure to ask about the equipment and cleaning method. We recommend the negative pressure method, which involves a vacuum hose with a diameter of at least 8 inches for optimal efficiency. It's crucial to avoid the Rotobrush method or any hose with a diameter below 8 inches, as they may not deliver the thorough cleaning your ducts need.
Main Duct Cleaning Assurance: Ensure that the company includes the cleaning of main duct lines. Some companies focus solely on cleaning floor or ceiling vents, neglecting the main duct lines – large rectangular ducting on top and/or sides of your furnace unit. This omission may occur due to a lack of experience or proper equipment. Since main ducts are typically the dirtiest parts of the ductwork, confirming their cleaning is essential for a comprehensive service.
Before/After Videos: Insist on Before/After video results for transparency and to avoid potential discrepancies.

What to Consider with a Higher Quote:
A higher quote doesn't always equate to superior service. Consider the following factors:
Commercial-Grade Equipment: Companies using powerful commercial-grade equipment may charge more than necessary for residential properties. This equipment might be more suited for commercial projects and could potentially damage residential ductwork.
Big Names or Franchises: Recognizable names and franchises may charge extra due to branding and advertising expenses. Consider opting for small local companies to avoid unnecessary costs.
HVAC Companies: HVAC companies may offer air duct cleaning as a side business, lacking specialized equipment and potentially charging more due to their focus on higher-value HVAC projects.
Armed with a comprehensive understanding of air duct cleaning costs and essential questions to ask, you can navigate the market confidently. Duct&Dryer Pros is here to ensure that your pursuit of a cleaner and healthier home environment is met with transparency, quality, and fair pricing. Feel free to reach out if you have any more questions or concerns – we're dedicated to helping you breathe easier!



Very happy you guys quoted me even lower than the price range above and I’m glad I went with your company :) Thank you very much for all your help!